Sole-rounding machine



Aug. 14,- 928.

`E. E. SABIN SOLE ROUNDING MACHINE 2 Sheets-Sheet 2 Filed Feb. l, 1926 Patented ug. i4, i928.,

en rara ERNEST E. SABIN, or BEVERLY, MASSACHUSETTS, ASSIGNGB. `'ro UNITED snor:

MAoHrNERY CORPORATION, or Pattensen,

JERSEY.

Application filed February This invention relates to treadle devices for use in connection with starting and stopping mechanisms of various sorts and is hereinshoivn as embodied ina solerounding machine o't' the saine general character Vas that disclosed in United VStates' Letters Patent No. 1,0485114, granted December 8l, 1912, upon application of W. Gr. Eaton.

t In the use of rounding machines organized as set forth in said Letters `Patent a blank from which a sole is to be eut is placed upon a horizontally disposed pattern vwhile the parts of the machine are at rest and the blank is held in position by means of a presser meinber or clamp plate which is brought into engagement with the flat upper surface of the blank through the operation or' a foot treadle and presses the blank tirmly against the pattern. TWhen the blank has been thus properly positioned and clamped, driving mechanism for causing a knife to travel around the pattern is' throwninto`op eration by the Vmanual shifting ot a starting or shipping lever. This shipping lever is so arranged` that when once throivn into an perati ve position itremains vthere While Vthe knife travels rapidly around the patternand upon the knife returning to its original posi tion the driving mechanism is automatically thrown out of operation, the 'shipping lever is released and retin-ns to an inoperative position7 and the movement oit the knife is arrested. Y

Thus machines constructed as justrindicated require the performance Vof tivo distinct movements by the operator before the rounding` operation commences; first, movement of the foot treadle to bring the presser Y member into contact with the blank for the purpose of clampingv the blank to the pattern: and second, Amovement o'l' the starting or shipping lever to throw thekniie-driving mechanism into operation. Such y'organiza- Y tiono' the foot treadle and the starting lever r"for independent actuation enablesthe. op

erator to Work the toot treadle to clamp the blank Without danger' of throiving the startf ing mechanism into'. opera-tion until the blank is clamped in correct -pos1tion..and, furthermore, either prior .toF or subsequently to' manipulation of thestarting lever..` the operator may (by letting up Von the toot treadl-efs release the presser member to free NEW JERSEY, A COR-PORATON `0F NEW sonnnounnme MAOHNn'.

4importance inasmuch as the travel of the knife is rapid and injuries to an operative caused by catching` his clothing beneath the presser member and being unable to escape the knife are Vnot uncommon. y

Nptivithstanding theadvantage of having the clamp operating treadle and the starting leverentirely independent of each other. the operative must remain atk the machine throughout the travel of the knife around the pattern and hold the toot treadle depressed to prevent release of the clamping pressure and consequent slipping or skidding oli' the blank relatively to the pattern such as would result in inaccurate trimming of the blank.r While this necessity Vin no way interferes With the successful operation of machines such as that disclosed in the Letters Patent above mentioned, it will be appreciated that. it it were unnecessary for the operative to hold the treadle depressed throughout the cycle ot the machine, he

Siti

could devote his undivided attention to the selection of a succeeding` blank from his Work bench and have the blank in his hand readyior positioning on the pattern immediately upon the conclusion of the rounding operation on the preceding blank. and thus the working capacityV Ot the machine would be increased. VFurther, itpositire mechanical means could be satisfactorily introduced to lock the presserf member in fixed Contact with the blank during the rounding operation the operative would be saved much labor that he Wouldotherwise expend in holdingrthe. treadle depressed with his foot.

Sole rounding machines which contain means to control positively the presser member have beenV employed heretofore, but these machines have combined tivo starting or stopping elements such as those above reverred to into asinglc, unitary structure, usually a foot `treadle mechanism. andthis structure has been soarranged that upon depression ot the treadle a predetermined distancegor nponmanipulation otlan eduivalent member. the presser member has come into elmnping contact with the sole hlanlfz and returned to its inoperative position and the Vrelative movement between t he parts arrested. Y c Y 'l/Vhile suchV an voi', 2,'anization provides the desirable characteristic of positively locking theupresser member in clamping engagement with the sole blank during the rounding operation, ity provides a machine that demands eXactness in its operation and callsV for a Workman that is both skillful andV experienced in the operation of the machine.

lVithout these lqualifications the liklihoed of injuryy to the Workman is considerable,

Vowing to the necessity of the operative de pressing the treadle While at theV same time positioning the yblank with his hands. it

being remembered that depression ofthe treadle past a predetermined point causes the presser member to be locked down and travel vof the knife aboutthe blank to commence. And'so an operative unacquainted with the machine might reasonably, altliough inadvertently, depress the treadle a trifle too far vvhile positioning the blank and if at thattime anypart ofthe clothing or body of the operative were caught beneath the resser member he Wouldbe helpless untill the machine had completed its cycle of operation and the knife traveled completely around the pattern.v Likewise, a competent and skillful operator mightbecome careless lor lose his' balance ivhileroperating the ma- 'chine arid'thus effect too great a depression v- 'ofl the treadle and the consequent operation of the machine at a time When such operation would produce a physical injury. Vlfhile the present invent-ion, in view of the foregoing, has for an object the' provision of means to maintain a presser member positivelyV in clamping engagementwith. a sole blank during travel of a knife `around a pattern, it also contemplates the provision of operating mechanism for positively coni trolling the presser member and its actuatkeo ingmechanism that is as simple and safe as possible in its character While at tliesame time providing'the advantage'of independent control of blank positioning and clamp anism.V

Accordingly, anii'mportant feature'of theV finvention consists in the combination with Vthe rounding'and sole clamping mechanism of-a sole roundingvmachine, of mean, Vfor controlling sole clamping mechanism, an ining Vmechanism and sole rounding mech-- dependently operable'member for setting the,

rounding mechanism in operation, and means operated by movement of said niembei" for locking the controlling means in operative position. By this arrangement it will be seen that the 'operative of the mi., chine may properly. position the blank upon the pattern Withoutfear of locking the pressureapplyiiig device upon the blank until the member which sets the rounding mechanisinv in operation has been manna `ly-moved into an operative position.

A.- furtlier important feature of the invention'con'sists in the provision, in -a sole rounding machine, of a lever' "for starting and stoppingVv the rounding` mechanisii, a

member for controlling the pressure applyi ing mechanism, means c actingfautomatically to throw the lever intoan inoperative position upon completion-of a fcycle vof operations ofthe "rounding mechanism, and

means dependent upon movement lof, the v leven to restore the pressure applyingl meehanisni to an ii'iopei'ativeeendition.

These and other important features and advantages of tlie'invention vvill be apparent Fig. 1 isl a vievvv in side elevation of theV machine fith' certain parts broken aivay the more clearly to shoii7 the treadle mechanism, Fig. 2 is a plan view showing thetreadl'e, thel lever, vand the interconnecting mechanism; c i Y. 'f j i' Fig. 3 is skeleton view in side elevation of the levcr forcontrolling "the rounding mechanism, the treadle, and the mechanism for locking the treadle'in a depressed position upon movement ofthe lever;V and Fig. 4f is a detailed vieiv in plan showing v the mechanism which automatically releases the lever for controlling the'roundiiig operation.

As herciiibefore stated the invention has been shown as embodied in a soleroiinding machine ofthe type discle'ied-in United `States Letters Patent ',No. 1,048,511, and

' from a reading of the following'specification reference may he had thereto for a detailedfA descriptionl of the construction and operation of any partsvof the machine not h'ercinrfully y disclosed.

Referring tothedrawings, a pattern 'l0/is stationaijily mounted in the usual Wav upon a rotatable Ytable or support 6. Solerounding mechanism, not shoivniii'the accom panying drawings but clearly illustrated in thek patent already referredV to, is Y mounted upon thetableG and carries a'knife which travels completelvaboiit the circumference Of the pattern 1.0"toltrim ai sole blankllQ toV the contour of the pattern.y l

To assist in properlyl positioning j the blank 12 upon the pattern 10 and to holdV the blank in position during the travel of the Ril knife-.around the pattern, presser member or clampplate 14 is loca-ted immediately The treadle 18 is formed in the shape of a bell-crank lever one end of Which comprises the treadle proper and the oppositeend of which comprises an arm 2O to Which a link bar 22 is'pivoted. The opposite end of the bar 22 is pivoted at 24 to a toggle mechanism comprising links 26 and 28 `which are pivote'd together at 80, the link 26 being also pivoted at 32 to the -machine frame, While the link 28 is pivoted at 34 to an arm 86. Thearm 3G is pivoted to the frame at 38 and the outward extremityof the arm 86 is provided with a cup-shaped cavity 4() with in which the lower extremity of a rod 42 is l Seated. lDepression of the'treadle 18 causes 'straightening of the toggle 26, 28 and elcvation of the arm 36 and consequently elevation of the rod 42 which is supported by the arm. The upper extremity of the rod 42 ,is pivoted at 44 to a fulcrum arm`46, the

fulcrum being located at 48 at a point intermediate between the ends of the arm. rIlle forward extremity of the arm 4G is connected `with a crosshead 50 which supports the pressermember 14. Consequently, elevation of the rod 42 causes the arm 46 to be rocked about its fulcrum point 48 to depress the lpressure applying member 14, causing the latter to move toward theV pattern 10. The extent of movement of the pressure applying member 14 toward the pattern and consequently the amount of pressure applied by said member toV a blank upon the pattern will vary according to the extent to Which the treadle 16 is depressed.

lt-Will be seen that the operative is free to depress the treadle 16 and release 'it as often as he Vdesires while positioning the blank 12 upon the pattern 10, and to assist in raising the treadle 1G from its depressed position a spring 5 2 may be extended between a fined lug 54 and the ar1n46. rThis spring provides resilient means to move the treadle to inoperative position and, in the absence ofany means to lock the'treadle down, it would be necessary for the operative of the machine to hold the treadle d epressed to insure that the pressure applying member should press the blank 12 against the pattern 1() during the sole rounding operation.

As herein illustrated, however, provision is made for locking the treadle in depressed position and to this end a segmental ratchet member-,5G is secured upon the side of the treadle arm 20. A spring-pressed pavvl 58 is locatedV immediately above `the ratchet 56 and is pivot-.ed at 6() to the machine frame, rlhis pawvl 58 is made in three sections, a, and `c, each of which may be moved downwardly independently of the remaining parts and each of which is provided with an actuating spring (Fig. 3) tending normally to produce such downward movement. The parvis c, Z) and c are arranged with their ratchet-engaging teeth staggered so as to securea very fine adjustment of the treadle.

Locking of the treadle in depressed position is effected by movement of the paivl 58 into engagement with the ratchet 56 while the treadle occupies a depressed position and this movement of the pawl is made dependent upon the throwing into operation of the sole rounding mechanism. `To this end a starting or shipping lever 62, for controlling the sole rounding mechanism` is AInovable betiveen either of the tivo positions illustrated by full and dotted lines in Fig. 1. The starting lever 62 is provided witha depending arm G4, the lower extremityvof kwhich carries a roll 68 for engagement with a cam member G8 fnedly secured to a rock shaft 70. The rock shaft 70 is so connectedI with the actuating mechanism of the sole rounding mechanism that movement of the handle 62 to an operative position (illustrated by dotted lines in Fig. 1), causing a slight upward movement of the cam arm'88 and arslight rotation ofthe rock shaft 7 O, throws the actuating mechanism into operation to commence the travel of the knife around the pattern. When the operating handle 62 is moved into an operative position it is .held there throughout the sole rounding operation by means of a flat surface 72 formed on a forward project-ion 74 of the lever moving into a locking position beneath a finger formed on a latch 76 (Fig. 4). il fixed stop 78 is carried by the machine and a spring 80, one extremity of Which engages the stop 78 and the opposite extremity of which rfits Within a pocket 82 formed Within the latch v76, tends to move the latch 7 G about its pivot 84 to maintain the finger of the latch in locked engage.- ment with the lever 62. The latch 78 for the starting lever 62 is provided with a hooked projection 88 which is to be used by the operative of the machine in manually releasing the latch and permitting the handle to return to its inoperative position.

VIn order to effect automatic return of the sta ting handle Yto an inoperative position upon completion of the rounding operation, and consequently throwing out of the artuating mechanism, the table 6 (Fig. 4) which rotates Wit-h the knife during its travel about the pattern is provided on its under side with cam-shaped lug 88. In the travel of the table during the cycle of operations of the machine the lug 88 finally contacts with the latch 7G`at the portion of the latch indi- Uhr) tori.

'hereinbeifore referred to.

cated at 90 and swings the latch about its pivot 84- to release the starting lever 62 and to permit it to be returned to its original inoperative posit-ion. Return of the handle inoperative position is effected by means olf a spring' TT through connections with the lever 62 such as those vili-ich are shown in Fig. l, and which correspond with similar connections fully descril'icd lin the patent The handle 62 is formed with a projection 02 (Fin: 3) which carries at its extremity a roll 04': and this roll adapted to ride within a cut-away portion 96 formed `within an enlarged upper extremity.,Y 08 ol: a rod 100. By means of kthis arrangement it will be seen that movement of the handle trom an operative to an inoperative position causes depression ot the -rod 100 and ino rement of the handle 62 from an inoperative to an operative posi-V .tionV causes elevation ol" theV rod 100. A spring' 102 cncircles the rod and since the upper extremity ot the springA engages With a iiied member 1011 and the lower extremity of the spring engages a n t 106 on the rod, it will bev seen that the spr 102 constantly urges the rod downwardly.

' To ollset the iniiucnce of the spring 102 when it .is desired 4 to maintain the rodV in an elevated position.

v.a pivoted. arm 108 is provided at one end Vwith Va pocket 110 in which a spring' 112 seated and the opposite end of the arm 108 carries a roll 114 ,which rides upon the outer surface ot' a cam-shaped projection 116 formed on the vouter surface of the entremity 98 ot' the rodv 100. By means ot this arrangement the spring 112 Will tend to move the roll 114 into close frictional engagement .With the extremity 98 and when Vthe projection 116 is above the roll 114 the frictional. engagoment'will support the rod in an 'elevated position notwithstandingi vthe compression ot thespring 102. The lower extremity oit' the Vrod 100 engages one end of aV centrally pivoted link or bar 118 and the opposite end of this link or bar 118 is pro- -vided with a slot'throueh which entends a connecting` rod 120. Nuts 122 upon the upper extremity loi the connoctinn' rod 120 Y hold the rod within a slot liorn'ied'in the link or bar 1.18. The lower extremity of the connectinerod120 connected to the paivl 68 by means of the nuts 124 so that depression ot the rod120 permits the paivl to move into locking;` engagement 1with the segmental ratchet 56' and elevation ol14 the rod 120 removes the pavvl 58 from engagement with the ratchet, thus it will be seen that operation of the pawl is dependent upon movement-o1 the'conncctingrod 120, the link 118, the rod; 100. and consequently the lever 62 which con- -trols the. sole rounding operation.

' inthe operationof the machine, a. blank 12 is placed upon the pattern-10 and by depressingV the treadle 1 6 the presser member la is brought into engagement With the blank. At this time theoperative of the-.machine in spects the blank and the machine parts to assure himself that he'is in readiness for the travel of the knife about vthe blank vand after' so doing he'depresses the lever 62 to throw into operation the sole roundmgactuatmg mech anism; Depression ot' this handle causes upward movement of the rod 100 and pernntsdowmvard movement of the rod 120 and engagement oit the pawl 58 with the ratchet 56. At this point the treadle is locked in depressedposfition, the pressure applying` member is locked in lengagement with lthe blank. and the 4actuating .mechanism is operatingl and will continueto ,operate until the latch 76 has been trippedto permit the lever 62 to return to an inoperative position to throw out `the actuating mechanism. As has been already pointed out, release. of thelatch 76 may be effected eithe'rmanually or by means of the cam 88 contacting` with the-'latch uponcompletion oit' `cycle oi operations ofthemachine.V

Villen the latch 6 is released-by either ot'V these means the lever62 is returned l-to its inoperative position andthe roll 92, engagingw'ith the lower portion of the cut-away part 96 of the rodlOO, causes depression of that rod and consequently-elevation of the rod 120 to lift the pavvl 58 out of engagement With the ratchet 56 and thereafter the spring 52 -aets automatically to break the toggle 26, 28 and raise the treadle 16 into inoperative position.` At such time thelnife -vvill have traveled completely around the blank, the pressure applying member will be ,Y

lifted from the blank, and the machine Will be ready to commence a newcycle. of operations. f ,p y

lt will further be understood that the illustrated construction is such that vthe rounding mechanism may beset in motion Without operating thej pressure applying mechanism. Such operation may be eected by moving the lever 62', which controls the rounding operation, into its depressed, op-

erative position, VWithout depressing theV treadle 16 which controlsthe pressure-apthe sole clamping mechanisim ,rounding mechanism, an independentlyfoperable memner for setting in operation the rounding mechanism, andmeans operated upon move-.

2. ln a sole rounding machine, sole clamping mechanism, rounding mechanism, a member' tor controlling the rounding mechanism, a member for controlling the clamping mechanism,- and connecting mechanism cxtem'ling. between the two members and so arranged that depression of one of the members causes the other member toV be loclred in a depressed position.

y n, machine for operating upon shoe parts `having, in combination, a presser member', vactuating' mechanism, a lever for setting in operation the actuating mechanism, and a lever 'for controlling the presser member, each of said levers being arranged tor independent manipulation to move them into'an operative position,and movementJ of said last-named lever into an .inoperative position being dependent upon said irstnamed lever.

4r. A sole rounding machine having, in combination, a presser member, a treadle mechanism for controlling the presser member, actuating mechanism, a lever operable independently ot said treadle mechanism for controlling theV actuating mechanism, and means to lock the treadlein a depressed position, said means being dependent upon movement` ot the independently operable lever to effect release ot the treadle inember. Y A

5. In a machine for peripherally contouring a boot or shoe part, a plurality of mechanisms operable simultaneously or each independently of the other, vlevers to set in opera-tion the mechanisms, means acting automatically to throw one ot the levers into an inoperative position upon completion of a simultaneous cycle of operation of its corresponding mechanism, and means dependent upon movement ot the last-named lever to restore the second mechanism to an inoperative position.

6. In a device'otthe character described, treadle mechanism adapted to apply clamping pressure to a shoe part., an independently operable lever adapted to stop or start operations being performed upon the shoe part, and mechanism extending between the lever and the treadle to maintain the treadle in a depressed position when the lever occupies a position that allows working operations to be performed. t

7. A sole rounding machine having, in combination, rounding mechanism, a lever for cont-rolling the rounding mechanism, pressure applying mechanism, a treadle for controlling the pressure applying mechanism in such a ,manner that the amount of pressure applied varies according to the degree ot depression of the treadle, and means operated upon movement of the lever for locking the treadle in any desired degree of depression.

8; A sole rounding machine having, in combination, rounding mechanism, a lever tor, starting and stopping 4the rounding nmchanisni, pressure applying mechanism, a treadle 'lor controlling the pressure applying mechanism, means operated upon movement ot the lever for lockingthe treadle in a dclfiresserl position, and means operating automatically to throw the treadle and lever to' an inoperative position.

9; AL sole rounding machine having, in combination, rounding mechanism, a lever tor stating and stopping the rounding n'iechanism, pressure applying mechanism, a

rtreadle tor controlling the pressure applying mechanism, and means operated upon movement of the lever `for loclring the treadle iny a depressed position, and also tor releasing the treadle from a depressed position.

10.. A sole rounding machine having, in combination, rounding mechanism, a mem'- ber tor controlling theA rounding mechanism,` pressure applying` mechanism', a` member for controlling the pressure .applying mechanism, means to lock the members in an operative position, means to throw one of the members to an inoperative position upon completion ot .the rounding operation, and means operatedupon movement. of such member to an inoperative position to release the other member from an operative position.

ll. A sole rounding machine having, in combination, rounding mechanism, a lever for starting `and stopping the rounding mechanism, pressure applying mechanism, a treadle for controlling the pressure applyig mechanism, means acting automatically to throw the lever into an inoperative position upon the completion of a cycle ot operations ot the sole rounding mechanism, and means dependent upon movement of the lever to restore the pressure applying mechanism Y to an inoperative position.

l2. In a sole rounding machine, a presser Amember, a treadle, toggle mechanism eX- tending between the presser member and the treadle, rounding mechanism, a lever, mounted independently of the treadle, for controlling the rounding mechanism, and connections extending between the lever and the treadle to cause the treadle to be locked in a depressed position upon movement of the lever to an operative position.

13. A solo rounding machine having, in combination, rounding means, a starting lever, a pressure applying member, a treadle mechanism arranged to operate a toggle to cause depression of the pressure .applying member, and means rendered operative by actuation ot the starting lever for locking sion 'of said member. v

14. vA sole rounding machine having, 1nl

the treadle in any desired degree of deprescombination, a pressure applying member, a trea'dle mechanism for operating'the pressure ai) l in@ 'member a seffmental ratchet fixedly securedto the treadle, and a pawl having la plurality of teeth in staggered relation for engagement with the ratchet to lock the treadle in a depressed position.

15. A sole rounding machine having, in combination, a pressure applying member,

a treadle, means operated by the treadle for causing depression of the pressure applying member, a Spring actuated pawl Vtending to lock the treadle in a depressed position, a lever normally freevtovmove lnto a posi- 'tion for actuating the rounding mechanism,

and linkage extending between the lever and the pawl: and so arranged that movement of the pawl into locking engagement With the treadle is dependent upon movement of the lever to an operative position.

F16. Asole rounding machine having, in combination, pressure applying mechanism, a treadle for operating the pressure applying mechanism, means to lock the treadle in an operative position, rounding mechanism,

a lever normally. free to move 4into aposition for controlling the rounding mechanism, and resilient `means to eect release of the treadle member, said resilient means lbeing dependentfor operation upon movement ofA the lever to `an inoperative position. Y v

17. A sole rounding machineA having, in combination, rounding mechanism, a lever for controlling the rounding mechanism, pressureapplying mechanism, a treadle for controlling .the pressure applying mechamovement of theleverto ani operative posi'- tion.

name to this specification.

ERNnsTfE. sABIN.

In testimony 'whereof I have signed my 

